1) Everyone is imperfect.
2) Your god does not exist.
3) If a god did exist and was omnipotent, he/she/it would be wise enough to understand that expecting perfection from imperfect beings is cruel and foolish. Expecting such beings to believe in you when you offer no proof of your existence and, in fact, plant evidence that seems to indicate the opposite, and then torturing anyone who doesn't believe in you for all eternity would be even more cruel.
4) Again, your god does not exist, so all of that is irrelevant. Fortunately, you aren't going to be punished for all eternity for believing incorrectly because we atheists don't have any need to threaten you with this BS. The fact that you think such treatment (sending people to hell for not believing) would be justified is pretty fucking disgusting, though.

Why on Earth is their idea of salvation based on BELIEF? How in the world can you spit in the face of something that you're quite sure does not exist? Why am I even hearing this "witnessing" from anyone? How can anyone be faulted for not being persuaded of something, and deciding not to put "faith" in one of a million unprovable hypotheses over the others???

Ah, there's the guilt trip approach I missed so very much. Figured it was smothered under all the impotent rage and threats of violence that has been proliferating since a dangerous minority was elected leader of the free world.

Y'know, I'll take my chances. I'm not a bad person and if I had the funds I would absolutely be donating to charities and whatnot. In fact, I adopted a previously abused animal, I'm very generous toward the people I care about, I don't hate people because of petty things like them having a different religion, and I'm planning to help reduce my university's carbon footprint this summer by helping out with its community garden.

I like to think that the choices I made in my own life are more important than something that probably didn't happen thousands of years ago when it comes to my final reward.

You know, as a compassionate human being, even if I were to accept both your basic, unjustified premise of "sin," your unjustified premise that sin must be punished and also your unjustified premise that it doesn't have to be the same person punished as who actually did it, I wouldn't want someone else tortured for me, and I hope, if I ever genuinely believed I could, I wouldn't accept it.

Hey, Christians, did you ever think that maybe that's been the real test all along? That you're supposed to reject the temptation to escape what you believe to be your just punishment by condoning and accepting Jesus being brutally sacrificed in your place? It would certainly square with conventional, compassionate morality a whole lot better.